Convert C99 // comments to C89 /**/ comments.

On some platforms, the only compilers are dogmatically C89.

Remove the comment '?try', presumably a reference to a possible place to use
__try/__except. There's something seriously wrong with the internal's data
structures if the chain of magic pointers is corrupt - carrying on silently
isn't a great idea.

Remove commented out code from the pre-0.72 HV based tracking system.

Include the size of constants in constant subs (resolves CPAN #58485)

Resolve CPAN #58484: Devel::Size SEGVs on XSUBs post 5.9.4

Note that I am now maintaining it.

Clarify that BrowserUK wrote the version of the pointer tracking for 0.72.
0.73's version has been somewhat refactored by me. (So blame me for the bugs.)

Enforce the minimum perl version requirement in the Makefile.PL

This inform CPAN smokers to skip testing on earlier perl versions.

Convert to XSLoader.

Convert the tracking system to a 256-way tree.

This avoids needing to make compiled-in assumptions about the memory map on 64
bit systems, which in turn means all the code and documentation relating to
that, and how to recompile if the assumptions fail, can go.

Create free_tracking() to de-duplicate the code to free the tracking structure.

Use cmp_ok() in place of ok() with a < comparison, for better diagnostics.

Eliminate an unused lexical $tests.

In check_new(), tv can never be NULL, so assert() this.

This will simplify future refactoring.

Use SvPVX_const() instead of SvPVX(), and const check_new().

Also change check_new()'s return type to bool, as it only returns TRUE or FALSE,
and declare it static.

Without the consting, under -DDEBUGGING, the macro for SvPVX() assigns thing,
which is const SV *, to a void *, which elicits a legitimate compiler warning.
In turn, the return value of SvPVX_const() is const char *, which means that
check_new() needs to properly declare its parameter p as const void *.

Catching SEGVs with __try/__except is MSVC only, not general C++

__try/__except is an MSVC extension to C++ *and* C, and is orthogonal to
"regular" C++ exception handling. As there's no way to catch a SEGV with
C++ exceptions (certainly not portably), and __try/__except is available in C,
there's nothing to be gained from using C++ exceptions, and hence making the
code require a C++ compiler. Hence remove the logic from Makefile.PL to force
compilation with a C++ compiler, which didn't even work well on "both" kinds of
OS, as it assumed that the C compiler was named *exactly* qr/\Ag?cc\z/, and
that the analogous C++ compiler was available and named g++.

[Which isn't true when it's named 'ccache gcc', 'gcc-mp-4.6' etc, or when cc
isn't gcc]

No need to explicitly check AvARYLEN in 5.10 and later.

In 5.10 the struct slot was eliminated, and contents are now stored in magic,
which will already be found. Whilst there's no direct "harm" in looking again,
as the "seen" tracker will skip the second discovery, it's wasteful, and now
generates a compilation error, as AvARYLEN() expects a mutable pointer, whereas
the variable thing is const void *.

This also resolves CPAN RT #49437 - Devel::Size adds magic in Perl 5.10

Bump $VERSION to 0.72_50, ready for a development release.

Correct to 0.72 the CHANGES entry for the second "0.71".

Correct to 0.72 erroneous references to version '7.2'.

Remove DOS line endings from Makefile.PL and META.yml

import Devel-Size 0.72 from CPAN

git-cpan-module:   Devel-Size
git-cpan-version:  0.72
git-cpan-authorid: BROWSERUK
git-cpan-file:     authors/id/B/BR/BROWSERUK/Devel-Size-0.72.tar.gz

import Devel-Size 0.71 from CPAN

git-cpan-module:   Devel-Size
git-cpan-version:  0.71
git-cpan-authorid: TELS
git-cpan-file:     authors/id/T/TE/TELS/devel/Devel-Size-0.71.tar.gz

0.70 as released to CPAN. (only metadata and Module::Install changes)

Module::Install upgraded to 0.77 from 0.71

Fix compilation under blead, and require at least 5.006

Compilation fix from Reini Urban.

Also, upgrade Module::Install to 0.71 from 0.68, and regenerate SIGNATURE.

Bump version to 0.70, and upgrade Module::Install to 0.88 from 0.85

SIGNATURES has not been updated, hence changed files will fail the signature
test.

import Devel-Size 0.69 from CPAN

git-cpan-module:   Devel-Size
git-cpan-version:  0.69
git-cpan-authorid: TELS
git-cpan-file:     authors/id/T/TE/TELS/devel/Devel-Size-0.69.tar.gz

import Devel-Size 0.68 from CPAN

git-cpan-module:   Devel-Size
git-cpan-version:  0.68
git-cpan-authorid: TELS
git-cpan-file:     authors/id/T/TE/TELS/devel/Devel-Size-0.68.tar.gz

import Devel-Size 0.67 from CPAN

git-cpan-module:   Devel-Size
git-cpan-version:  0.67
git-cpan-authorid: TELS
git-cpan-file:     authors/id/T/TE/TELS/devel/Devel-Size-0.67.tar.gz

import Devel-Size 0.66 from CPAN

git-cpan-module:   Devel-Size
git-cpan-version:  0.66
git-cpan-authorid: TELS
git-cpan-file:     authors/id/T/TE/TELS/devel/Devel-Size-0.66.tar.gz

import Devel-Size 0.65 from CPAN

git-cpan-module:   Devel-Size
git-cpan-version:  0.65
git-cpan-authorid: TELS
git-cpan-file:     authors/id/T/TE/TELS/devel/Devel-Size-0.65.tar.gz

import Devel-Size 0.64 from CPAN

git-cpan-module:   Devel-Size
git-cpan-version:  0.64
git-cpan-authorid: DSUGAL
git-cpan-file:     authors/id/D/DS/DSUGAL/Devel-Size-0.64.tar.gz

import Devel-Size 0.63 from CPAN

git-cpan-module:   Devel-Size
git-cpan-version:  0.63
git-cpan-authorid: DSUGAL
git-cpan-file:     authors/id/D/DS/DSUGAL/Devel-Size-0.63.tar.gz

import Devel-Size 0.62 from CPAN

git-cpan-module:   Devel-Size
git-cpan-version:  0.62
git-cpan-authorid: DSUGAL
git-cpan-file:     authors/id/D/DS/DSUGAL/Devel-Size-0.62.tar.gz

import Devel-Size 0.61 from CPAN

git-cpan-module:   Devel-Size
git-cpan-version:  0.61
git-cpan-authorid: DSUGAL
git-cpan-file:     authors/id/D/DS/DSUGAL/Devel-Size-0.61.tar.gz

import Devel-Size 0.60 from CPAN

git-cpan-module:   Devel-Size
git-cpan-version:  0.60
git-cpan-authorid: DSUGAL
git-cpan-file:     authors/id/D/DS/DSUGAL/Devel-Size-0.60.tar.gz

import Devel-Size 0.59 from CPAN

git-cpan-module:   Devel-Size
git-cpan-version:  0.59
git-cpan-authorid: DSUGAL
git-cpan-file:     authors/id/D/DS/DSUGAL/Devel-Size-0.59.tar.gz

import Devel-Size 0.58 from CPAN

git-cpan-module:   Devel-Size
git-cpan-version:  0.58
git-cpan-authorid: DSUGAL
git-cpan-file:     authors/id/D/DS/DSUGAL/Devel-Size-0.58.tar.gz

import Devel-Size 0.57 from CPAN

git-cpan-module:   Devel-Size
git-cpan-version:  0.57
git-cpan-authorid: DSUGAL
git-cpan-file:     authors/id/D/DS/DSUGAL/Devel-Size-0.57.tar.gz

import Devel-Size 0.56 from CPAN

git-cpan-module:   Devel-Size
git-cpan-version:  0.56
git-cpan-authorid: DSUGAL
git-cpan-file:     authors/id/D/DS/DSUGAL/Devel-Size-0.56.tar.gz

import Devel-Size 0.55 from CPAN

git-cpan-module:   Devel-Size
git-cpan-version:  0.55
git-cpan-authorid: DSUGAL
git-cpan-file:     authors/id/D/DS/DSUGAL/Devel-Size-0.55.tar.gz

import Devel-Size 0.54 from CPAN

git-cpan-module:   Devel-Size
git-cpan-version:  0.54
git-cpan-authorid: DSUGAL
git-cpan-file:     authors/id/D/DS/DSUGAL/Devel-Size-0.54.tar.gz

import Devel-Size 0.53 from CPAN

git-cpan-module:   Devel-Size
git-cpan-version:  0.53
git-cpan-authorid: DSUGAL
git-cpan-file:     authors/id/D/DS/DSUGAL/Devel-Size-0.53.tar.gz

import Devel-Size 0.52 from CPAN

git-cpan-module:   Devel-Size
git-cpan-version:  0.52
git-cpan-authorid: DSUGAL
git-cpan-file:     authors/id/D/DS/DSUGAL/Devel-Size-0.52.tar.gz

import Devel-Size 0.51 from CPAN

git-cpan-module:   Devel-Size
git-cpan-version:  0.51
git-cpan-authorid: DSUGAL
git-cpan-file:     authors/id/D/DS/DSUGAL/Devel-Size-0.51.tar.gz

import Devel-Size 0.50 from CPAN

git-cpan-module:   Devel-Size
git-cpan-version:  0.50
git-cpan-authorid: DSUGAL
git-cpan-file:     authors/id/D/DS/DSUGAL/Devel-Size-0.50.tar.gz

import Devel-Size 0.03 from CPAN

git-cpan-module:   Devel-Size
git-cpan-version:  0.03
git-cpan-authorid: DSUGAL
git-cpan-file:     authors/id/D/DS/DSUGAL/Devel-Size-0.03.tar.gz

import Devel-Size 0.02 from CPAN

git-cpan-module:   Devel-Size
git-cpan-version:  0.02
git-cpan-authorid: DSUGAL
git-cpan-file:     authors/id/D/DS/DSUGAL/Devel-Size-0.02.tar.gz

initial import of Devel-Size 0.01 from CPAN

git-cpan-module:   Devel-Size
git-cpan-version:  0.01
git-cpan-authorid: DSUGAL
git-cpan-file:     authors/id/D/DS/DSUGAL/Devel-Size-0.01.tar.gz